Roller-skate wheel



H. A. HANNUM.

ROLLER SKATE WHEEL.

APPLICATION FILED MAR. 17, 1920.

1,847,777. Patented July 27, 1920.

UNITED STATES PATENT OFFICE.

HARRY A. HANNUM, OF SPRINGFIELD, MASSACHUSETTS, ASSIGNOR TO WINCHESTERREBEATING ARMS 00., OF NEW HAVEN, CONNECTICUT, A CORPORATION.

ROLLER-SKATE WHEEL.

Specification of Letters Patent.

Application filed March 17, 1920. Serial No. 366,479.

To all whom it may concern:

Be'it known that I, HARRY A. HANNUM, a citizen of the United States,residing at Springfield, in the county of Hampden and State ofMassachusetts, have invented a new and useful Improvement inRoller-Skate Wheels; and I do hereby declare the following, when takenin connection with the accompanying drawings and the characters ofreference marked thereon, to be a full, clear, and exact description ofthe same, and which said drawings constitute part of this application,and represent, inp Figure 1, a view in side elevation of my improvedroller-skatewheel.

Fig. 2, a view'thereof in transverse section.

Fig. 3, a broken sectional detail view showing the tread forming anintegral part of the exterior side-plate, before thepositioning-shoulder is formed thereupon.

Fig. 4;, a corresponding view after the formation of thepositioning-shoulder.

Fig. 5, a similar view showing the edge of the interior side-plate inplace against'the said shoulder with the edge of the same spun over itfor its retention in place.

My invention relates to an improvement in ball bearing roller-skatewheels of the socalled inclosed type, the object being to produce at alow cost for manufacture, a skatewheel of improved appearance andconstructed with particular reference to being easily assembled so as tobe free from the wabbling of the wheel on its hub.

With these ends in view, my invention consistsin a ball-bearing skatewheel of the inclosed type, the said wheel having certain details ofconstruction as will be hereinafter described and pointed out in theclaims.

In carrying out my invention, as herein shown, I employ a struck-up,circular, exterior side-plate 2 formed with an integral tread 3, theouter edge of which is reduced in thickness to produce upon its innerface a positioning-shoulder 4 providing a bearing for the inner face ofthe outer edge of a circular, interior side-plate 5 which is held inplace by having the extreme edge of the tread 3 spun over it to form theretainingfiange 6, whereby the two plates are firmly secured together.

Before the two plates 2 and 3 are assembled, as described, the wheel-hub7 is inserted between them, this hub having a peripheral race-way 8 forthe balls 9 which are also confined by ball-cups 10 produced by strikinup the inner portions of the plates, as 0 early shown in Fig. 2. Thesaid plates are so proportioned, however, that when the edge of theinner plate is brought to a bearing upon the shoulder 4; of the exteriorplate, the opposed high points 11 and 12 of the respective plates areheld apart to form a compensating-space 13 which permits the forcibleclosing-in of the ball-cups 10 to the extent required to prevent thewheel proper from wabbling on the hub. This latter is an importantfeature of my improvement, since it enables everyv wheel to beabsolutely corrected after assemblance, in case any wabbling thenmanifests itself, due to slight inaccuracies in construction orvariations in the thickness of the stock.

I claim:

1. A ball-bearing roller-skate wheel of the inclosed type, the saidwheel consisting in a hub, and two plates inwardly struck up to formball-cups and secured together in spaced relation, whereby theiroppositely located high points are kept out of contact to provide forcorrection after assemblance, for the. prevention of wabbling.

2. A ball-bearing roller-skate wheel comprising a hub having a race-way,a struckup exterior side-plate formed with a tread furnished withapositionin -shoulder, and an interior side-plate, the e, ge of which isabutted against the said shoulder and which is held in place by thespinning over it of the edge of the said tread, and the ball-cupportions of the said plates being held apart by the said shoulder toform a compensationspace to provide for correction after as semblance,for] the prevention of wabbling.

In testimony whereof, I have signed this specification in the presenceof two subscribing witnesses.

HARRY A. HANNUM.

Witnesses:

DAVID B. HOAR, JOHN B. SHEA.

Patented July 27,1920.

